Finding the Fourth Proportional to 105,593.44, 145,663.68 and 65,294.32
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Solution
The fourth proportional to 105,593.44, 145,663.68 and 65,294.32 is: 90,071.99
Step by Step Solution
- Step 1: Write the proportion equation
105,593.44 : 145,663.68 = 65,294.32 : x - Step 2: Convert to fraction form
105,593.44/145,663.68 = 65,294.32/x - Step 3: Cross multiply
105,593.44x = 145,663.68 × 65,294.32 - Step 4: Simplify right side
105,593.44x = 9,511,010,934.30 - Step 5: Solve for x
x = 9,511,010,934.30/105,593.44 - Step 6: Final answer
x = 90,071.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.